Herman ekelund



H.BKBLUND. GOKING OVEN.

(No Model.) v

No. 471,692. Patented Mar. 29, 1892.

INVENTDR;

WIT NEESEEII ma@ (QZ c2/maa ,raras Nrrnn ATENT FFICEQ SPECIFICATION forming part of Letters Patent No. 471,692, dated March 29, 1892.

Application led March 18. 1890. serrer No. 344,321. (No mener.) Patented in Germany January 5, 1890. No. 53,617, man England Meren 1, 1300, Ne. 3,306.

To all whom t may concern: I

Be it known that I, HERMAN EKELUND, a subject of the King of Sweden and Norway, residing at J nkping, in the Kingdom of SWeden, have invented a new and useful Coking- Oven, (for which I have obtained Letters Patent in England March l, 1890, No. 3,306, and in Germany January 5, 1890, No. 53,6l7,) of which the following is a specification.

My invention relates to improvements in furnaces for charring, roasting, baking, or coking wood, coal, or other material; and it consists of an improved furnace hereinafter fully described, in which the aforesaid operations may be carried on continuously or uninterruptedly and with great economy of fuel and labor. Y

In the annexed drawings this furnaceis represented in two vertical sections,Figures l and 2 on the respective lines a b and c d.

This furnace consists of three principal chambers or compartments A, B, and C and of certain details hereinafter fully described, of which chambers, A is for drying and heating, B for baking, charring, roasting, or coking, and C for extinguishing and cooling the roasted, charred, or coked materials received from chamber B. The chamber or compartment B is separated at its ends by partitionwalls cl. and b from the adjoining compartments D and E. The compartments A and B are separated from one another partly by double-vaulted floors containing two channels F and G and partly by sliding doors H, by

Vwhich the openings or passages between thev compartments maybe opened or closed. The compartmentsB and C are separated by vaulted floors, containing each only one channel I, and by the sliding doors K in said floors. In the compartment C the 'iron tanks or cisterns L are placed. The furnace is covered by a vaulted roof or cover provided with the doors b', the funnel or chimney c, and the exhaust- Y fan d. The compartments A and B are to be lled with the materials to be operated upon. From a fire-place situated outside of the furnace the heat is conducted through the opening e into the compartment D, from which the same enters, as indicated by the curved arrow in Fig. 1, through openings into the lower channels G, passes thence downward through holes in the bottoms of the said channels, as indicated by dotted lines in Fig. 2,into the c ompartment B, and effects there the charrl'ng, baking, roasting, or coking of the materlals placed in said compartment B. The gases produced thereby pass through the perforated or grate-shaped vaulted bottoms of the compartment B into the channels I, and. from these through pipe f into the tank or clstern P, the circulation being maintained by means of a fan Q, placed upon the latter. The gases proceed then through the pipe g into the compartment E, the latter constituting a fire-place,

where the gas is ignited. Water and tar are condensed in the tank or cistern P. From 1 the compartment E the gases are conducted up into the channels F and through openings in theirvroof into the compartment A. To avoid crowding the drawings, only a few of the perfor-ations of the doors are represented. (See perforations in the floor of compartment Ain Fig. l.) From compartmentA the vapors l are drawn off and discharged by the exhaustfan d. The apparatus having been once well heated, no further firing in the fire-place in compartment E is required, as the gases w1ll be ignited by the heated walls in the channels F, into which air is conducted partly from without through pipes h and partly .from the compartment C through the pipes 1,. If it is not desired to condense the Water and the tar, the gases may be conducted from the channelsZ directly into the compartment E through any suitable conduit. The mass 1n the compartment B having been sufliciently baked, charred, roasted, or coked, the doors K are then to be opened by means of the levers It, whereupon the material contained in chamber B will fall down into the tanks or cisterns L. The doors K are then to be closed and the material, previously dried and heated in the compartment A, let down through the' doors H into the compartment B. After the doors H have been again closed a new charge may be admitted through the doors h into lthe compartment A, and the charring or coking may thus be continued uninterruptedly.

By means of the jointed levers m, which are pivoted to the tanks L and to which are attached the cover N, the said tanks L may be closed. A steam-jet through the pipe u is adlOO mitted into the tanksL forextinguishingand cooling ott their contents. The gases produced in the said tanks L are conducted through pipesp into the compartment E. The heat radiating from the tanks L into the coinpartment C is conducted through the pipes t' upinto the channels F. The materials in the tanks L, having been extinguished and cooled, are to be taken out through doors at thelower ends of ,the said tanks. The coking in the compartment B is thus carried on by means of the gases streaming in from the compartment D and with the addition of the heat, which, during the extinguishing of the materials, is radiated into the compartment C. The drying and the heating in the compartment A is produced partly by means of heat arriving from the compartment B and partly by means ofthe gases, which are conducted up from the compartment E and the hot air which streams in through the pipes up from the compartment C.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. A furnace for continuous coking, characterized by three superposed compartments A, B, and C, the middle compartment B adjoining two lateral compartments D and E, of which compartments the upper one A and the middle one B are separated by vaulted tioors, each provided with channels, one channel in each floor communicating with the lateral compartment D and the middle compartment B and the other in each Hoor with the other lateral compartment E and the top compartment A, while the middle compartment B and the lower one C are separated by `a vaulted floor containing single channels communieating with the compartment B, which channels by means of pipes communicate with the l lateral compartment E, each of the floors being also provided with openings and sliding doors, all with the view of being able to iill the middle compartment Bfrom the top compartment A and empty the same into the lower one C, and that heated air conducted into the lateral compartments may pass through the .ing communication between the middle and lower compartments, the compartment E to one side of compartment B, connections between the passages in the iioors and the chambers A, B, and E, the tank in the compartment C, the lids therefor, the pipe leading from the tank to chamber E, and means for supplying hot products of combustion to the chamber B, all substantially as specified.

In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.

HERMAN EKELUND. Witnesses:

NERE A. ELFWING, ERNST SvANQvIs'r. 

